Glue-spreading machine.



"11. 11.11. CAMPBELL. GLUE SPREADING MACHINE.

APPLIOATION FILED AUG. 29, 1910.

982,348. Patented 12111.24, 1911.

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R. N. B. CAMPBELL. GLUE SPREADING MACHINE. APPLICATION FILED 4118.29,1910.

Patented Jan.'24, 1911.

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ROBERT N. B. CAMPBELL, OF DERBY, CONNECTICUT.

GLUE-SPREADING MACHINE.

Specification of Letters Patent.

Patented Jan. 24, 1911.

Application filed August 29, 1910. Serial No. 579,524.

1 To all whom 'it may concern.'

Be it known that I, ROBERT N. B. CAarr- BELL, a citizen of the UnitedStates, residing at Derby, county of New Haven, State of Connecticut,have invented an Improve- A thermore, will eifect a great saving in theamount of glue required.

Heretofore, in order to prevent the adhesion of thin veneers and pliablecomposite material to the rolls of glue spreading machines, it has beenthe practice to cover the rolls with carpet, which adds appreciably tothe cost of production of veneers and composite material as thecoverings require to `be renewed frequently and considerable time isrequired to attach them, in addition to which the carpet covering causesgreat waste and loss of glue.

In order to avoid the necessity for covering the rolls and to effect animportant s aving by dispensing with the covers, saving the timerequired to attach them and pre venting waste of glue, I have devisedthe novel improvements in glue spreading machines which I will nowdescribe, referring to the accompanying drawings forming a part of thisspecification and using reference characters to indicatethe severalparts.

Figure 1 is an end elevation, partly broken away, showing theapplication of my novel improvements to a well known form of gluespreading machine; Fig. 2 a side elevation as seen from the right inFig. 1; Fig. 3 an enlarged detail end elevation of the upper roll andthe bracket for the chain carrying wheel; Fig. 4 a corresponding sideelevation as seen from the right; Figs. 5 and 6 are respectively end andside elevations of an upper chain carrying bracket detached; Fig. 7 anenlarged detail sect-ion on the line 7-7 in Figs. 5 and 8, looking inthe direction of the arrows; and Figs. 8 and 9 are respectively end andside elevations of a lower chain carrying bracket detached.

10 denotes the framework of an ordinary glue spreading machine whichwill not be described in detail as specifically it forms no portion ofthe present invention.

11 denotes the lower roll whose shaft 12 is journaled in the frameworkand 13 the upper roll whose shaft 14 is journaled in bearings 15 whichare vertically adjustable in the framework, said bearings being providedwith arms 16 and 17, the purpose of which will presently be explained.

The rolls of glue spreading machines are ordinarily provided in theirperipheries with longitudinal grooves 18. An important feature of myinvention consists in providing the machines with carrying chains,indicated by 19, two carrying chains being shown in the present instancewhich are quite sufficient under ordinary conditions. These chains maybe ordinary sprocket chains, and sprocket teeth 20 are provided thereforby making two parallel circumferential grooves 21 in the rolls for eachchain, the grooves being the required distance apart to form the teeth20 between the intersections of the circumferential grooves with thelongitudinal grooves. The upper and lower carrying chains are made longenough to pass over sprocket wheels 22 and 23 respectively. Uppersprocket wheels 22 are carried by a shaft 24 which is journaled inbearings 25 Seated in brackets 26 which are detachably secured to arms17. These bearings slide longitudinally in the brackets and are retainedin place when seated by pins 27 which engage half sockets 28 in thebrackets and bearings, as clearly shown in Fig. 7. The brackets areadjustably secured iny place on arms 17 by means of set screws 29 whichpass through the brackets and engage the arms. Lower sprocket wheels 23are carried by a shaft 30 which is journaled in bearings 31 seated inbrackets 32 which are pivoted to the framework as at 33, and are lockedin place after adjustment by tightening up nuts on the pivot bolts.Bearings 31 are retained in place in the brackets by pins 27 similarlyto bearings 25. The operation of this portion of the invention will beobvious from the drawings. The chains make it impossible for a thinveneer or a pliable composite material of any character to follow eitherroll and adhere to it. After passing through the rolls, the veneer orother material will pass forward between the chains and out of themachine. It will be noted that bearings 25 and 31 are placed far enoughapart so that the sprocket wheels will cause the contiguous sides of thechains to diverge more or less from the rolls at any adjustment of theupper roll.

34 denotes a glue pot for the upper roll. This glue pot is pivoted to abracket 35 which is bolted to arm 16. In order to provide a convenientadjustment of the glue pot toward or from the upper roll, I sus` pendthe glue pot by means of turn buckles 36 from levers 37 which arepivoted to brackets 2G. These levers rest upon brackets 35 and thedelivery end of the glue pot,

` indicated specifically by 3S, may be swung toward or from the roll byadjustment of the turn buckles.

I-Iaving t-hus described my invention I claim:

l. A glue spreading machine comprising a supporting framework, bearingsmounted therein and provided with arms, an upper glue applying rolllmounted in said bearings, additional bearings supported from the 'armsof the iirst mentioned bearings, a

sprocket shaft mounted in said additional bearings, a sprocket chainconnecting said roll and said shaft, a lower roll coperating with theupper roll, a second sprocket shaft, and a sprocket chain connecting thelast mentioned shaft with said lower roll.

y 2. A glue spreading machine comprising a supporting framework,bearings mounted therein and pro-vided with arms, an upper glue applyingroll mounted in said bearings, brackets detachably secured to said arms,bearings supported by said brackets, a sprocket shaft mounted in thelast mentioned bearings, a sprocket chain connecting said roll and saidshaft, a lower roll cooperating with the upper roll, a second sprocketshaft, and a sprocket chain connecting the last mentioned shaft withsaid lower roll.

3. A glue spreading machine comprising a supporting frame work, bearingsmounted therein and provided with oppositely eX- tended arms, an upperglue applying roll kmounted in said bearings, a lower roll supported bysaid frame work, s rocket shafts for said rolls, bearings depenc ingfrom one arm of each of the irst mentioned bearings and supporting theupper sprocket shaft, sprocket chains connecting each roll with itsrespective shaft, and means for supporting a glue pot from the remainingarms of the ported by said frame work, sprocket shafts for said i'olls,a depending bracket removably secured to one arm of each of saidbearings, bearings in said brackets for the upper sprocket shaft,sprocket chains connecting each row with its respective shaft, and meansfor supporting a glue pot from the remaining arms of the first mentionedbearings, and means connected with said brackets for varying theposition of said glue pot.

5. In a glue spreading machine upper and lower rolls each provided withlongitudinal ribs and peripheral grooves intersecting said ribs to formsprocket teeth, sprocket shafts, and chains connecting each wheel withits respective sprocket shaft.

6. A glue spreading machine comprising a supporting frame work, bearingsmounted thereon, upper and lower glue applying rolls, t-he upper rollbeing mounted in said bearings, sprocket shafts for each roll, removablebrackets carried by said bearings for supporting the sprocket shaft forthe upper roll, and carrying chains passed around said rolls and shafts.l n

7. A glue spreading machine comprising a supporting frame work,bearingsnio-unted therein, upper and lower glue applying rolls, theupper roll being mounted in said bearings, sprocket shafts for eachroll, adjust` `inounted in said bearings, a lower roll sup-

